I highly doubt that. It was one of the largest, most widely-acclaimed, most profitable trilogies in cinema. Sure, Bale's a good actor, and if you're trying to say that his talents would have been recognized regardless of Batman then I agree, but it's difficult for me to believe that his "career trajectory" would have been exactly the same without Batman.

Although, what exactly do you mean by "career trajectory," anyway? And by what means would that trajectory be measured?

I never said exactly the same. I believe his talents would've gotten him similar roles to showcase his talents. Sure being Batman gives him his choice of more mainstream/bigger movies but he's not interested in doing just those roles.